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JP4134509B2 |
To provide a charger which is simple for a secondary battery. A capacitor C1 is disposed on the input side of an inverter and connected to a power supply for charging through a diode bridge D1. When charging, the junction of the star-con...
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JP4136823B2 |
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JP2008187873A |
To surely diagnose a failure in switching elements at a stoppage, even if, naturally, a motor is operating.When the motor 8 is deactivated or operated under PWM control, a CPU 6 controls the switching elements (FET11, FET12, FET13, FET14...
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JP2008187838A |
To provide a DC motor control unit capable of facilitating control of the maximum torque generated by a DC motor without performing a complex operation.This DC motor control unit includes: the DC motor for driving a roller; a motor drive...
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JP4131393B2 |
An electric power steering control unit is provided which is capable of detecting a motor current stably irrespective of a temperature variation to improve steering feelings. In this control unit, a temperature detecting circuit located ...
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JP4131588B2 |
To provide control equipment, capable of reducing capacity and saving energy of a switching element constituting a drive means at the driving of a DC motor. Control equipment is constituted of DC fan motors 7, 8 and a plurality of switch...
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JP4129118B2 |
The invention relates to a control circuit for a direct current motor with a reverse pole protection device, which is connected to the electric circuit of the electrolytic capacitor and the free-wheeling diode in order to reduce losses i...
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JP4129126B2 |
PURPOSE: To provide a drive control method of high efficiency and reliability for a linear compressor of a free piston structure. CONSTITUTION: This drive control method for the linear compressor is provided with a compressing mechanism ...
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JP2008178276A |
To provide a drive control device and an image forming device capable of performing feedback control of a drive motor in accordance with an abnormal level on the driving amount of an object driven by the drive motor in the drive control ...
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JP4125265B2 |
A motor drive control apparatus includes a motor, a power supply, a control circuit, a first current detector, a first switching element, and a second switching element. The first current detector generates a first detection voltage indi...
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JP4127251B2 |
A rotation information detection device detects rotation information of a DC motor based on a surge component waveform superimposed on a voltage waveform between the terminals of the DC motor or a current waveform of the DC motor, a circ...
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JP2008172867A |
To satisfy both silence and drive continuity of an electric motor by performing optimal control of power supply state of the electric motor in the relation of the temperature of an element for driving the electric motor and the guarantee...
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JP4118725B2 |
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JP4118985B2 |
To surely obtain assisting power even when a bicycle gets over the difference in level at the wheeling, by controlling the assisting power by a controller corresponding to the operation of a wheeling means. A wheeling means 741 is mounte...
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JP4120538B2 |
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JP4120565B2 |
To provide a bathroom ventilating/drying device allowing reduction of an arrival time at a target airflow rate without imparting distrust to a user in time of a restart. This bathroom ventilating/drying device has: a circulation fan moto...
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JP2008161050A |
To provide a dual-mode system for an inexpensively usable electrically powered double-insulated tool, such as a holding type power tool and an appliance.The system includes a battery power module 14 and a line power module. The line powe...
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JP4116940B2 |
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JP4113307B2 |
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JP2008154313A |
To provide a controller of an electric motor, capable of controlling the electric motor without using a speed sensor by highly accurately estimating a rotation speed, and to provide a washing machine equipped with the same.The controller...
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JP2008148996A |
To provide a rotating body control device capable of suppressing the generation of collision noise among a plurality of rolling elements in a rotating body having balancing means storing the plurality of rolling elements; and a washing m...
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JP4112569B2 |
While a PWM-controlled, FET-switched three-phase motor (26) is operating in a mechanical damping mode, a single current sensor (32) is used to measure current in the motor (26). When mechanical feedback into the motor (26) exceeds a pred...
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JP2008146730A |
To provide a motor driving apparatus for surely detecting a short circuit of the motor provided with a DC brush.A DVD player 1 is equipped with: a spindle motor 10 for the motor provided with DC brush; a PU head 12; a recording/reproduci...
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JP2008148552A |
To provide a vacuum cleaner capable of securing accuracy in the input control of a current air blower, based on the load current of a commutator motor.The vacuum cleaner has a commutator 27 for outputting the output of a current detector...
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JP4105627B2 |
In order to design as inexpensively as possible a control device for DC motors which are provided with a commutator for feeding their motor windings which has at least four sliding contacts, this device comprising a modulation stage whic...
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JP4108543B2 |
To provide a power circuit that can prevent an adverse effect such as an operation stop of a device caused by a load variation at the start of motor drive while sharing a power supply in a control means and in a motor, and can achieve po...
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JP4108203B2 |
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JP4108428B2 |
A brushless DC fan motor capable of communicating with an external apparatus while simplifying the circuitry. A speed control command generator, which generates a command for controlling the rotational speed of the rotor, include a micro...
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JP2008141812A |
To provide a high performance motor which can be operated at a speed other than high-speed operation and low-speed operation, in a motor with two-magnetic poles in particular.An armature 3 is provided with a commutator, provided to a rot...
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JP2008141842A |
To provide a motor control circuit which can control the drive of a motor with higher accuracy while employing a feed-forward control method which is advantageous in terms of economics.In the motor control circuit which controls the driv...
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JP4102071B2 |
A dual-mode system for inexpensively operating electrically powered double-insulated devices (12), such as hand-held power tools and appliances. The system includes a cordless battery power module (14) that supplies the power and current...
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JP2008136277A |
To provide an electric power steering device, wherein the production of electromagnetic noise can be suppressed by constructing a motor drive circuit without having to use FETs.In the electric power steering device is so constructed as t...
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JP4098716B2 |
The invention relates to a control device for operating a load circuit provided with an inductive load, comprising a control stage producing a pulse-width modulated control signal with measuring disconnection intervals provided in betwee...
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JP2008131774A |
To provide an electric blower whose temperature is reduced by reducing input when the temperature of the electric blower rises and whose continuous use is realized.The electric blower 1 is provided with a pair of field windings 4, a temp...
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JP4096665B2 |
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JP4093573B2 |
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JP4096945B2 |
A speed control apparatus includes a speed control part 12 for generating a source current command based on a difference between a speed command of a motor 4 and speed detection in which a speed of the motor 4 for driving a load 2 is det...
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JP2008121606A |
To prevent an impact stress from being applied to a torque transmitting system at the time of starting of an engine.In an engine starting device having a starting motor 30 formed by a DC shunt motor 3b in which an armature winding 32b an...
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JP4089445B2 |
A semiconductor integrated circuit device is provided to reduce the adverse effect of PWM noise occurring in a PWM driving section on an analog voltage processing section in an IC, in which digital and analog circuits are combined on a s...
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JP2008118818A |
To provide a disk device which can properly detect a failure of a motor for rotating a disk while reproducing the disk.The disk device 101 comprises: the motor 1 which rotates the disk 200; a reproduction part 5 which reads data from the...
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JP2008118819A |
To provide a disk device which can properly detect a failure of a motor for rotating a disk while reproducing the disk.The disk device 101 comprises: a motor 1 for rotating the disk 200; a reproduction part 5 which reads data from the di...
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JP2008118821A |
To prevent increase in complexity and scale by providing required minimum auxiliary circuits for a failure of a switching element constituting an H bridge that controls driving of a DC motor.Two conductive lines (conductive line where tw...
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JP2008117496A |
To provide a disk device appropriately detecting that motor rotating a disk is short-circuited.A control section 4 instructs supply of a full acceleration voltage only for a fixed time for discriminating the size of the disk 200 and dete...
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JP4089028B2 |
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JP4088883B2 |
To provide a load driving device which suppresses the loss in a switching operation of an FET and allows the FET to be made smaller-sized and more cost-reduced than a conventional device. When a driving current to an actuator 11 is incre...
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JP2008113490A |
To provide a rotator drive controller capable of easily deciding a suitable control gain that corresponds to a plurality of target speeds.A reference clock 1 is input into a speed discriminator part 2 corresponding to speed, and the spee...
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JP2008111343A |
To detect unexpected failure of a starter 2, in an economy running type engine starting device 1 having only one meshing type starter 2.This engine starting device 1 has a first detecting means 15 detecting contact resistance of a slidin...
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JP4085196B2 |
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JP4085375B2 |
A controller has a plurality of control units that are mutually connected by a communication line and are set at different places of an automobile, each corresponding to a different one of its power windows and serving to control its ope...
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JP4086981B2 |
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